chapter 12 Flashcards
the solubility of oxygen gas in water at 25 degrees C & 1.0 ATM pressure of oxygen is 0.041 g/L. the solubility of oxygen in water at 3.0 ATM & 25 degrees C is ___ g/L
0.12
Molality is defined as the________
moles solute/kg solvent
concentrated hydrochloric acid is about 12.1 M. What volume of concentrated HCL is required to produce 5500mL of 0.250 M?
0.114 L
calculate the molarity of a solution that contains 70.0g of H2SO4 in 280. mL of solution
2.55 M
what mass of Na2SO4 is required to prepare 400. mL of 1.50 M NaSO4 solution?
85.2g
what mass of water is contained in 160. grams of 22.0% KCL solution?
35.2g
what mass of 30.0% Ca(NO3)2 solution contains 60.0g of water?
14.3g
the process of solute particles being surrounded by solvent particles is known as___
solvation
the concentration of urea in solution prepared by dissolving 16g of urea in 39g of H2O is ___% by mass
41
the concentration of benzene solution prepared by mixing 12.0g C6H6 with 38.0g CCL4 is ___molal.
4.04
the concentration of KBr in a solution prepared by dissolving 2.21g of KBr in 897g of water is ___molal.
0.0207
the concentration of HCL in a solution that is prepared by dissolving 5.5g of HCL in 200g of C3H6O is ___molal
0.75
a solution is prepared by dissolving 23.7g of CaCl2 in 375g of water. The density of the resulting solution is 1.05g/mL. the concentration of CaCl2 is ___% by mass
6.32
what is the molality of a solution prepared by dissolving 0.40 mol into 2.0kg of solvent?
0.2m
